Lubricator



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' W. H. CRAIG,

LUBRIOATOR. No. 281,241. Patented July 17, 1883.

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WARREN H. CRAIG, OF LAWRENCE, MASSACHUSETTS.

LUBRICATOR.

SPECIFICATION forming part ofLetters Patent No. 281.241, dated July 17.1883,

Application filed June 13, 1851!. (No model i invented a new and usefulImprovement in Steam-Engine Lubricators; and I do hereby declare thesame to be described in the following specification, and represented inthe accoinpanying drawings, of which- Figure l is a vertical andtransverse section of a lubricator provided with my invention, thenature of which is. defined in the claims hereinafter presented. Fig. 2is a similar section, but-taken on a plane at right angles to the planeof section of Fig. 1.

The lubricator hereinafter described is provided not only with means byor through which a person can see the drops of water as they pass fromthe condenser into the oil-reservoir, but with means by or through whichhe can also see the drops of oil asthey may be discharged from theoil-reservoir and pass therefrom to the duct by which they are con Veyedinto the steam-engine cylinder or valvechamber thereof.

In the drawings, A denotes the condenser, having extending upward withinit, nearly to its top, a pipe, B,.which at its lower part is tocommunicate with the pipe for supplying the engine with steam.

Below the condenser A is the oil-reservoir 0,. between which and thecondenser is an oilobservation chamber,'D, having a pane, a, of glassinserted in either or each of its opposite sides. A tube, 1), leads fromthe neck of the oilreservoir into the observationchamber D, in order toopen communication between said neck and chamber.

In the upperpart of the observation-chamber is an opening, 6, by whichcommunication between the pipe B at its lower part or with the induct E,by which such pipe is to receive its steam, is secured;

is a Valve, 9, whose stem h screws into a tubular projection, 27, of theneck, a stuffing-box, being applied to the stem and projection. Directlyin front of the cl osure j" there is an opening, Z, in the neck of theoil-reservoir, such opening having fitted into it a glass pane,

m, which is arranged so close to the closure that a drop of water, afterescaping from the valve-chamber F through the closure, shall touch boththe pane and the closure in passing down between them. This insures thedrop being seen in case the pane may be clouded with steam or vapor oroil. The glass pane is also arranged so that each drop of water mayfreely escape from it into the reservoir.

At its lower end the oil-reservoiris furnished with a waste-cock, G,while at the upper part of its neck tlie'oilreser\-*oir has an induct,H, for supplying it with oil, such induct not only having a lateralmouth, 02., leading down into it, but being provided with a screw, 0,arranged, as shown, to effect the closing of such month at itslowerpart, as occasion may re quire.

The pipe B maybe dispensed with and a pipe may lead from the upper partof the condenser A directly into the steam-pipe; but in this case theobserwation-chamber must have communication with the said steam pipe.From this it will be seen that with the pipe B opening at its foot intothe steanrinduct but one such induct becomes'neeessary.

In the operation of this lubricator the steam flows from the steam-pipeinto the pipe B, thence upward through and out of such pipe into thecondenser, where it becomes condensed, and in the form of water passesdown into the valve-chamber and from thence into the oil-reservoir, and,descending through the oil therein,'by its specific gravity, it willelevate the oil and cause it to flow into and through theobservation-chamber, which will be filled with water by condensation ofthe steam. 0wing to the water in the condenser standing higher than thewater in the observation-chamber, the water of the latter cannot passdown therefrom into the oil-reservoir. As each drop of oil may passupward through the observation-chamber, such drop maybe seen through itspane or panes of glass.

I am aware that a displacement lubricator, having an observation-port infront of the discharging-educt of the water-trap below the condenser, isnot new; and therefore I do not claim, broadly, a lubricator of suchclass provided with an opening port arranged to enable a person to seethe water in its discharge from the water-trap. My lubricator, besidessuch a port, has an observation-chamber arranged as described, whereby aperson through adifferent port may see the oil in its discharge into theduct by which it is led to the steam-pipe.

I would further remark that I do not herein claim a steam-enginelubricator consisting of a condenser and an oil-reservoir communicatingwith each other and having an oil-observation chamber arranged betweenthem and means of communicating with the oil-reservoir and the induct ofthe condenser, substantially asset forth, as such forms the subject ofanother application for a patent filed by me February 21, 1883, andhaving the serial number 85, 7 7 4.

I therefore c1aim 1. A steam-engine lubricator provided not only with acondenser and an oil reservoir having a communicating passage and avalvechamber and valve thereto, as described, but with a glass port orpane in front of the valveseat opening, and also having between suchcondenser and oil-reservoir an observationchamber provided with one ormore panes of glass, and with passages or means of communication withthe oil-reservoir .and the steam induct of the condenser, all. beingsubstantially and for the purpose as set fortln 2. A steam-enginelubricator provided not only with a condenser and an oil-reservoir,

but having a valve-chamber and valve in the .oilreservoir, a passageleading from the 0011- denscr into the valve-chamber, and anobservation-port or glass pane in front of the valveseat opening, allbeing substantially as set forth, and the oil-reservoir havingcommunication with the steam-induct, so as to enable oil to pass fromsuch reservoir into such induct.

3. A steam-engine lubricator provided not only with a condenser and anoil-reservoir, but having a valve-chamber and valve in theoil-reservoir, and also having an observationport or glass pane in frontof the valve-seat opening at a distance therefrom, such as will causethe drops of water discharged through thevalve-seat opening to pass downin contact both with the pane and the part containing such opening, allbeing essentially as shown and described.

4. The steam-engine lubricator consisting of the condenser, its inductand internal tube, and eduction-passage, valve and valve-chamher, andoil-reservoir, provided with an observation-panc, arranged with thevalve-seat, as set forth.

5. The steam-engine lubricator consisting of the condenser, its inductand internal tube, eductiorrpassage, valve and valve-chamber,oil-reservoir, and observationchamber, arranged and adaptedsubstantially as set forth, such chamber being provided with one or moreglass panes, arranged in it as and for the purpose specified.

WVARR-EN HILLIARD CRAIG. \Vitncsses R. H. EDDY, E. B. PRATT.

